This cold river of air travels from west to east in the northern hemisphere. last winter, it dipped far south to bring cold air and snow to many southern states. this is the

i give you 27 !

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

Light waves travel than sound waves.

Which statement is actually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.